Patents by Inventor Sigge Johansson

Sigge Johansson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4209978
    Abstract: A method and a device for bending a rod-shaped link blank into a substantially closed chain link, particularly while at the same time hooking the link blank into a chain end. According to the invention, the blank is brought into a first receiving position with one of its end portions located between, on the one hand, two rotatable abutment rollers disposed at a distance from each other and, on the other hand, a bending tool movable back and forth transversely between said abutment rollers. The bending tool is then brought to a position between the two rollers so as to bend said one end portion of the link blank.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: July 1, 1980
    Assignee: Bulten-Kanthal AB
    Inventors: Sigge Johansson, Rolf Bergstrom